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