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