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