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