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)(19,26)(20,23)(21,25)(22,30)(24,27)(28,32)(29,31)(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)(17,19,27,29,21,28,20,30)(18,22,23,32,25,31,24,26)(1,3,4,7)(2,6,5,8)(9,12,14,13)(10,15,11,16)(19,28)(22,31)(26,32)(29,30)(2,5)(6,8)(9,13,14,12)(10,15,11,16)(17,20,21,27)(18,23,25,24)(19,29,28,30)(22,26,31,32)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.