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