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