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