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