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