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