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