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