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