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