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