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