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