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