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