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