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