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