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