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