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