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