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