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