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