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