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