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