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