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