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