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