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