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)(21,26)(22,25)(23,27)(28,31)(30,32) involution — undirected(1,2,5,6)(3,7,4,8)(17,19)(18,24)(20,30)(21,22)(23,28)(25,26)(27,31)(29,32)(1,3,5,4)(2,7,6,8)(10,14)(15,16)(17,20,30,19,23,22,21,28)(18,25,32,31,27,29,26,24)(1,4,5,3)(2,8,6,7)(9,11,13,12)(10,15,14,16)(17,21,23,30)(18,26,27,32)(19,22,28,20)(24,25,31,29)(2,6)(7,8)(9,12,13,11)(10,16,14,15)(17,22,30,28,23,20,21,19)(18,25,32,31,27,29,26,24)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.