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