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