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