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