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