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