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