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