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