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