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