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