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