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