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