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