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