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