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