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