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