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)(11,15)(17,18,20,22)(19,23,24,21)(26,29)(27,31)(2,4)(6,7)(9,10)(11,12)(13,14)(15,16)(25,26)(27,32)(28,29)(30,31) involution — undirected(3,8)(6,7)(10,14)(11,15)(17,18)(19,21)(20,22)(23,24)(25,26,28,29)(27,30,31,32)(1,3)(2,6)(4,7)(5,8)(9,11,13,15)(10,12,14,16)(17,18)(19,21)(20,22)(23,24)(25,26)(27,30)(28,29)(31,32)(1,4,5,2)(3,7,8,6)(9,12)(10,15)(11,14)(13,16)(17,19,20,24)(18,21,22,23)(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.