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