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