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