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