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