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