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