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