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)(19,22)(20,23)(21,25)(24,28)(26,30)(27,31)(29,32)(1,2)(3,7)(4,6)(5,8)(9,11,14,15)(10,13,16,12)(17,19,21,26)(18,22,25,30)(20,27,28,32)(23,31,24,29)(1,3)(2,5)(4,8)(6,7)(9,10)(11,12)(13,15)(14,16)(18,23)(19,26)(20,28)(22,29)(24,25)(30,31) involution — undirected(2,6)(3,8)(9,12,14,13)(10,15,16,11)(17,19)(18,22)(20,27)(21,26)(23,31)(24,29)(25,30)(28,32)(2,6)(5,7)(9,13,14,12)(10,15,16,11)(19,26)(22,30)(27,32)(29,31)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.