Hand wash with plenty of low pressure water. Gentle pressure for hard to reach areas using a cleaner like Motul Motowash to loosen grime. If it aint dirty, don't wash it, washing can affect several things like electricals and remove lubricants from key areas so be selective in the areas you are cleaning. Cars are no different except in the fact that cars have a protective shell over the electricals and are tested for water intrusion from rain by the designers and factory production.
Regarding the paint, never clean it dry unless you must and then, use a light dusting motion with the finest microfiber like those $20 Ducati red towels that they sell (I keep one in the storage compartment in a ziplock. Carry a quick detailer polish like the little Plexus mentioned above. Wax periodically (3 times a year if always out in the sun) with Klasse AIO acrylic based polish/sealant- this is the very best stuff for those who don't have the time to wax every month, and its a hard coating- resists contaminants from embedding into the paint while giving literally a showroom shine. If you are bothered with swirl marks which you already have, then consult a detail shop versed in removing swirls without thinning the paint too much and achieve a fresh start with a showroom swirl free surface and be careful next time you clean.
To avoid washing often, I detail the bike liberally with 303 Speed Detailer- this is the best quick detailer that I have ever used. Its even better than Meguiars Professional, Mothers, and all the other ones, and I've tried them all over the past 15 years. To protect plastics from sun drench/ sunburn, use 303 Aerospace protectant, again the safest sunscreen out there as it does not alter the composition of materials applied to in any way, but you have to apply regularly depending on exposure. Don't use UV protectant on grip parts, however as that may cause slippery surface affecting safety. For those parts you have to suck it up and replace when worn.
Hope this helps- from 23 years experience detailing, and if you are not anal about appearance, these recommendations don't apply to you, just ride and enjoy the ride instead.