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