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