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