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