Intermapper maps are really proprietary flat file database files. So in the truest sense of the word, it does not do drawings like you would do in Visio or the like programs. With saying that though, you can import background images that could represent a room, server, etc… that you could then arrange the icons onto that.
But word of caution. If your background image is large or very detailed, you will start hurting InterMapper's performance trying to load these background images on startup and the memory usage. Again, it has to do with what the maps are really doing for you verses how the icons are displayed for representation.