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