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)(11,14)(12,13)(15,16)(17,18,20,25,21,26,29,22)(19,24,27,30,28,23,32,31)(2,5)(6,8)(18,22)(19,27)(20,29)(25,26)(28,32)(30,31) involution — undirected(1,3,4,7)(2,6,5,8)(10,13)(14,16)(17,19,20,27,21,28,29,32)(18,23,25,31,26,24,22,30)(17,19,20,27,21,28,29,32)(18,24,25,30,26,23,22,31)(9,11,12,15)(10,14,13,16)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.