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