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