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