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