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