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