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