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