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