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