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