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