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