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