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