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