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