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