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