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