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