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