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