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