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