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