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