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