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