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