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)(8,13)(12,15)(14,16)(17,18)(19,30)(20,32)(21,25)(22,28)(23,27)(24,29)(26,31) involution — undirected(1,3)(2,8)(4,12)(5,13)(6,15)(7,14)(9,16)(10,11)(17,19,24,31)(18,25,29,32)(20,23,21,22)(26,28,30,27)(1,4,7,2)(3,12,14,8)(5,9,6,10)(11,13,16,15)(17,20)(18,26)(19,23)(21,24)(22,31)(25,28)(27,32)(29,30)(1,5,7,6)(2,9,4,10)(3,13,14,15)(8,16,12,11)(17,21,24,20)(18,25,29,32)(19,22,31,23)(26,27,30,28)(1,5,7,6)(2,10,4,9)(3,13,14,15)(8,11,12,16)(17,22,24,23)(18,27,29,28)(19,20,31,21)(25,26,32,30)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.