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