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