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