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