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