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