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