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