There are pictures in the CT Solomani book, the MT Solomani book half, and (IIRC) in the MGT book, as well as one from FASA (CT era), and a few around the web.
In short, there is almost no common "look" to Solomani ships. The windowed "bomber nose" first seen on the Empress Marava recurs on the Bulk Freighter and the Courier, but is modified or absent on the Patrol Cruiser (Endeavor, from FASA) and the Trader.
Some ships are symmetrical, some are not. There is no common hull form.