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