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