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