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)(17,18,23,20,24,21,22,31)(19,26,28,27,29,30,32,25)(2,5)(6,8)(17,19,24,29)(18,25,21,27)(20,30,31,26)(22,28,23,32)(10,13)(14,16)(17,20,22,18,24,31,23,21)(19,27,32,26,29,25,28,30)(1,3,4,7)(2,6,5,8)(17,21,23,31,24,18,22,20)(19,26,28,27,29,30,32,25)(9,11,12,15)(10,14,13,16)(17,22,24,23)(18,20,21,31)(19,28,29,32)(25,30,27,26)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.