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)(11,15)(12,14)(13,16)(17,18,21,26,22,27,29,24)(19,23,30,31,28,32,20,25)(2,5)(3,7)(9,11)(10,13)(12,16)(14,15)(17,19)(18,23)(20,29)(21,30)(22,28)(24,25)(26,31)(27,32) involution — undirected(11,16)(13,15)(18,24)(19,28)(21,29)(23,31)(25,32)(26,27) involution — undirected(2,5)(6,8)(10,14)(13,15)(17,20,22,30)(18,25,27,31)(19,29,28,21)(23,24,32,26)(1,3,4,7)(2,6,5,8)(19,28)(20,30)(23,32)(25,31)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.