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)(19,24,28,31)(20,25,21,30)(23,29,32,27)(1,2)(3,8)(4,7)(5,6)(10,11)(12,13) involution — undirected(9,11,14,10)(12,15,13,16)(17,19,22,28)(18,23,26,32)(20,27,21,29)(24,25,31,30)(1,3,5,4)(2,7,6,8)(9,12,14,13)(10,15,11,16)(17,19)(18,24)(20,29)(21,27)(22,28)(23,30)(25,32)(26,31)(1,4,5,3)(2,7,6,8)(9,13,14,12)(10,15,11,16)(17,20,22,21)(18,25,26,30)(19,27,28,29)(23,31,32,24)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.