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