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