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