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