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