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