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