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