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