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