One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,9,10,16)(4,12,13,7)(6,14,15,11)(18,21)(19,24)(20,23)(25,26)(27,32)(28,31)(29,30)(1,3,4,11,5,10,13,14)(2,6,7,9,8,15,12,16)(17,18,23,26,22,25,20,21)(19,24,30,32,28,31,27,29)(17,19,22,28)(18,24,25,31)(20,27,23,30)(21,29,26,32)(3,10)(6,15)(9,16)(11,14)(17,20,22,23)(18,21,25,26)(19,27,28,30)(24,29,31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.