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