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