One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(9,10,15,14)(11,12,13,16)(18,22)(20,23)(24,28)(25,29)(27,30)(31,32)(1,3,5,4)(2,6,8,7)(9,11,15,13)(10,16,14,12)(19,26)(24,31)(27,30)(28,32)(9,12,15,16)(10,11,14,13)(17,18,23,29,21,25,20,22)(19,24,30,32,26,31,27,28)(1,3,5,4)(2,7,8,6)(9,13,15,11)(10,16,14,12)(17,19)(18,24)(20,27)(21,26)(22,28)(23,30)(25,31)(29,32)(1,4,5,3)(2,6,8,7)(9,14,15,10)(11,12,13,16)(19,26)(24,31)(27,30)(28,32)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.