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)(17,18,20,25,21,23,24,32)(19,26,29,31,27,28,30,22)(10,13)(11,15)(17,19,21,27)(18,22,23,31)(20,30,24,29)(25,28,32,26)(1,3,5,4)(2,6,7,8)(9,10)(11,14)(12,13)(15,16)(18,23)(19,27)(25,32)(29,30)(10,13)(14,16)(17,18,24,32,21,23,20,25)(19,28,30,31,27,26,29,22)(1,4,5,3)(2,6,7,8)(9,11,12,15)(10,14,13,16)(19,27)(22,31)(26,28)(29,30)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.