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