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