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)(17,18,24,29,23,28,22,27)(19,26,30,25,20,31,21,32)(2,6)(7,8)(17,19)(18,25)(20,23)(21,24)(22,30)(26,29)(27,31)(28,32) involution — undirected(1,3,5,4)(2,7,6,8)(10,13)(14,16)(17,20,22,30,23,19,24,21)(18,26,27,32,28,31,29,25)(1,4,5,3)(2,8,6,7)(17,21,22,20,23,30,24,19)(18,25,27,26,28,32,29,31)(9,11,12,15)(10,14,13,16)(17,22,23,24)(18,27,28,29)(19,30,20,21)(25,31,32,26)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.