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