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