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