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