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