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