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