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