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)(11,15)(12,14)(13,16)(17,18,22,25)(19,26,21,23)(20,24,29,32)(27,31,28,30)(2,7)(3,4)(9,10,12,14)(11,13,16,15)(17,19,22,21)(18,23,25,26)(20,28,29,27)(24,31,32,30)(1,3,6,4)(2,8,7,5)(9,10)(11,13)(12,14)(15,16)(20,29)(24,32)(27,28)(30,31)(1,4,6,3)(2,5,7,8)(9,11)(10,13)(12,16)(14,15)(17,18)(19,23)(20,24)(21,26)(22,25)(27,30)(28,31)(29,32)(1,5)(2,3)(4,7)(6,8)(17,20)(18,24)(19,27)(21,28)(22,29)(23,30)(25,32)(26,31) involution — undirected(17,21,22,19)(18,23,25,26)(20,28,29,27)(24,30,32,31)A 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.