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