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