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