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