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