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