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