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