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