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