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