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