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