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)(17,18,22,26)(19,23,21,25)(20,28,30,31)(24,27,32,29)(1,2,5,6)(3,7,4,8)(9,10)(11,15)(12,14)(13,16)(17,19,22,21)(18,23,26,25)(20,29,30,27)(24,31,32,28)(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(17,20,21,29,22,30,19,27)(18,24,23,28,26,32,25,31)(1,4,5,3)(2,7,6,8)(11,16)(13,15)(17,19,22,21)(18,23,26,25)(20,29,30,27)(24,31,32,28)(10,14)(13,15)(17,19,22,21)(18,25,26,23)(20,29,30,27)(24,28,32,31)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.