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