Sorry, I dont have any pics for you at the moment, but it is real easy to find. its in the upper oilpan section on the left (driver side). Its held in with 4 bolts and has a single wire plug.
A brief run-down for the oil pan on the lexus motor (many other manufactures too). There is a lower sump section (stamped steel section)(it has the drain plug in it), then the upper sump section (cast aluminum section), then the engine block.
If no one has posted a picture by tomorrow evening, then I will get one for you while I am over at the shop.