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)(19,25)(20,22)(21,30)(23,28)(24,27)(26,32)(29,31)(1,3)(2,5)(4,7)(6,8)(9,10)(11,13)(12,14)(15,16)(17,19,21,28,22,26,27,31)(18,23,24,25,20,29,30,32)(2,6)(3,7)(9,11,12,15)(10,13,14,16)(17,20,22,18)(19,23,26,29)(21,30,27,24)(25,31,32,28)(2,6)(5,8)(10,14)(13,16)(18,20)(19,26)(24,30)(28,31) involution — undirected(17,19,27,31,22,26,21,28)(18,23,30,32,20,29,24,25)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.