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