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