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