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