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