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