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