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