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