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