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