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