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