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