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