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