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