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