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