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