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