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