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