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