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