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