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