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