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