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