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