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