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