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)(19,26)(20,21)(22,24)(23,25)(27,31)(28,29)(30,32)(1,3,6,5)(2,7,8,4)(9,10,12,13)(11,14,15,16)(19,20)(21,26)(27,28)(29,31)(2,8)(4,7)(9,10)(11,14)(12,13)(15,16)(17,19,23,20)(18,21,25,26)(22,27,30,28)(24,29,32,31)(2,8)(3,5)(9,10)(11,14)(12,13)(15,16)(17,20,23,19)(18,21,25,26)(22,27,30,28)(24,31,32,29)(1,4,6,7)(2,3,8,5)(9,11,12,15)(10,14,13,16)(17,21)(18,19)(20,25)(22,29)(23,26)(24,27)(28,32)(30,31)(1,5,6,3)(2,7,8,4)(17,22,23,30)(18,24,25,32)(19,27,20,28)(21,29,26,31)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.