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