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