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