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