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)(19,28)(20,30)(21,27)(22,32)(23,26)(24,29)(25,31)(1,3,5,4)(2,6,7,8)(9,10,14,13)(11,16,12,15)(17,19,23,20)(18,24,26,25)(21,29,22,31)(27,30,32,28)(1,4,5,3)(2,6,7,8)(9,11,14,12)(10,15,13,16)(17,20,23,19)(18,25,26,24)(21,31,22,29)(27,28,32,30)(9,12,14,11)(10,15,13,16)(18,26)(24,25)(27,32)(28,30)(9,13,14,10)(11,16,12,15)(17,21,23,22)(18,27,26,32)(19,29,20,31)(24,30,25,28)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.