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