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