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)(11,15)(12,13)(14,16)(18,20)(19,21)(25,26,30,32)(27,28,31,29)(2,6)(3,8)(9,11)(10,14)(12,15)(13,16)(17,18,22,20)(19,23,21,24)(25,27)(26,29)(28,32)(30,31)(1,3,5,8)(2,7,6,4)(9,11,13,16)(10,14,12,15)(17,19,22,21)(18,23,20,24)(25,28,30,29)(26,27,32,31)(1,3)(2,7)(4,6)(5,8)(9,11)(10,15)(12,14)(13,16)(17,20,22,18)(19,23,21,24)(25,27)(26,28)(29,32)(30,31)(1,4,5,7)(2,8,6,3)(9,12,13,10)(11,15,16,14)(17,21,22,19)(18,24,20,23)(25,29,30,28)(26,31,32,27)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.