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