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