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