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