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