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