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