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