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