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