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