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