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)(19,29)(20,32)(21,26)(22,27)(23,28)(24,31)(25,30)(2,6)(7,8)(9,11,13,10)(12,15,16,14)(17,19,22,31,23,30,21,20)(18,24,26,29,28,32,27,25)(1,3,5,4)(2,7,6,8)(10,11)(14,15)(17,20,21,30,23,31,22,19)(18,25,27,32,28,29,26,24)(1,4,5,3)(2,8,6,7)(12,16)(14,15)(19,30)(20,31)(24,32)(25,29)(9,12,13,16)(10,14,11,15)(17,21,23,22)(18,26,28,27)(19,20,30,31)(24,29,32,25)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.