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