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