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)(17,18,22,26)(19,23,28,31)(20,24,27,30)(21,25,29,32)(1,2)(3,6)(4,5)(7,8)(17,19,22,28)(18,23,26,31)(20,29,27,21)(24,32,30,25)(9,11,12,16)(10,13,14,15)(17,20,21,19,22,27,29,28)(18,24,25,23,26,30,32,31)(1,3,4,7)(2,6,5,8)(17,21,22,29)(18,25,26,32)(19,20,28,27)(23,24,31,30)(2,5)(6,8)(17,20,21,19,22,27,29,28)(18,24,25,23,26,30,32,31)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.