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