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