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