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