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