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