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