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