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