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