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