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