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