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