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