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