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