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