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