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