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