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