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