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