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