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