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