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