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