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