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