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