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