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