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