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