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