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