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