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