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