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