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