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