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