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)(11,15)(12,13)(14,16)(17,18)(19,20)(21,22)(23,24)(26,29)(27,31)(1,2,5,4)(3,6,8,7)(10,12)(11,16)(18,22)(20,23)(25,26,28,29)(27,32,31,30)(9,11,13,16)(10,14,12,15)(17,19,21,24)(18,20,22,23)(25,26,28,29)(27,30,31,32)(1,3,5,8)(2,6,4,7)(9,11)(10,14)(12,15)(13,16)(17,19)(18,23)(20,22)(21,24)(25,26)(27,30)(28,29)(31,32)(1,4,5,2)(3,7,8,6)(9,12,13,10)(11,15,16,14)(17,20,21,23)(18,19,22,24)(25,27)(26,30)(28,31)(29,32)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.