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