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