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