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