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