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