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