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