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