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