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