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