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