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