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