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