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