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