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