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