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