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