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