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