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