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