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