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