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)(17,18,20,24,22,25,21,26)(19,27,28,31,30,32,29,23)(2,4)(5,6,8,7)(10,13)(14,16)(17,19)(18,23)(20,29)(21,28)(22,30)(24,32)(25,31)(26,27)(2,4)(18,24)(19,28)(20,21)(25,26)(27,32)(29,30) involution — undirected(5,7,8,6)(9,11,12,15)(10,14,13,16)(18,25)(23,31)(24,26)(27,32)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.