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