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