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