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