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