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