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