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