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