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