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