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