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