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