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