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