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