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