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