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