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