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