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