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