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