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