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