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