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