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