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