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)(17,18,21,26,22,27,19,24)(20,25,28,32,29,23,30,31)(1,3)(2,6)(4,12)(5,11)(7,14)(8,16)(9,15)(10,13)(18,23,27,25)(24,31,26,32)(2,7)(6,14)(8,15)(9,16)(17,19,22,21)(18,24,27,26)(20,28,29,30)(23,31,25,32)(19,21)(24,26)(28,30)(31,32) 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.