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