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