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