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