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