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