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