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