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