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