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