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