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