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