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