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)(11,13)(12,14)(15,16)(18,22)(19,25)(20,27)(23,28)(24,31)(29,30) involution — undirected(2,5)(3,7)(9,11)(10,13)(12,15)(14,16)(18,23)(19,25)(22,28)(26,32) involution — undirected(11,15)(13,16)(17,18,21,23)(19,24,25,30)(20,28,27,22)(26,31,32,29)(1,3,4,7)(2,6,5,8)(10,14)(11,15)(17,19)(18,24)(20,26)(21,25)(22,29)(23,30)(27,32)(28,31)(2,5)(6,8)(11,15)(13,16)(18,23)(19,25)(22,28)(26,32) 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.