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