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