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