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