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