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