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