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