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