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