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