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