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