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