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