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