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