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