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