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