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