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