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