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