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)(17,18,22,20)(19,27,30,24)(21,25,32,28)(23,26,29,31)(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,14,15,16)(17,19)(18,24)(20,27)(21,29)(22,30)(23,32)(25,26)(28,31)(1,3,5,4)(2,7,8,6)(10,15)(14,16)(17,20,22,18)(19,28,30,25)(21,24,32,27)(23,26,29,31)(9,12,13,11)(10,16,15,14)(17,21,22,32)(18,25,20,28)(19,29,30,23)(24,26,27,31)(1,4,5,3)(2,6,8,7)(19,21)(23,29)(24,28)(25,27)(26,31)(30,32)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.