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