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