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