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