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