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