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