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