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