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