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