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