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