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