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