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