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