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