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