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