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