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