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