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)(17,18,22,27)(19,28,25,24)(20,29,31,30)(21,26,23,32)(1,3,5,4)(2,6,8,7)(9,11,15,13)(10,16,14,12)(17,19)(18,24)(20,26)(21,29)(22,25)(23,30)(27,28)(31,32)(9,12,15,16)(10,11,14,13)(17,20,21,24,22,31,23,28)(18,25,32,30,27,19,26,29)(1,3,5,4)(2,7,8,6)(9,13,15,11)(10,16,14,12)(17,21,22,23)(18,26,27,32)(19,29,25,30)(20,28,31,24)(1,4,5,3)(2,6,8,7)(9,14,15,10)(11,12,13,16)(17,21,22,23)(18,26,27,32)(19,30,25,29)(20,24,31,28)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.