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