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