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)(11,15)(12,14)(13,16)(17,18,22,21)(19,25,27,23)(20,24,28,29)(26,31,32,30)(1,2,5,6)(3,4,8,7)(9,10,12,14)(11,13,16,15)(18,21)(23,25)(24,29)(30,31)(1,2,5,6)(3,7,8,4)(9,10)(11,13)(12,14)(15,16)(20,28)(24,29)(26,32)(30,31)(1,3)(2,4)(5,8)(6,7)(9,11)(10,13)(12,16)(14,15)(17,19,22,27)(18,23,21,25)(20,26,28,32)(24,30,29,31)(1,2)(3,4)(5,6)(7,8)(17,20,22,28)(18,24,21,29)(19,26,27,32)(23,30,25,31)(1,4)(2,3)(5,7)(6,8)(17,21,22,18)(19,25,27,23)(20,29,28,24)(26,31,32,30)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.