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