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