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)(11,15)(12,13)(14,16)(17,18)(19,23)(20,29)(21,25)(22,26)(24,28)(27,32)(30,31)(3,7)(5,8)(10,13)(14,15)(17,19,22,27)(18,23,26,32)(20,21,28,31)(24,30,29,25)(1,2)(3,5)(4,6)(7,8)(9,10)(11,14)(12,13)(15,16)(19,27)(20,28)(23,32)(24,29) involution — undirected(1,3,4,7)(2,5,6,8)(9,11)(10,14)(12,16)(13,15)(17,20)(18,24)(19,21)(22,28)(23,30)(25,32)(26,29)(27,31)(1,2)(3,5)(4,6)(7,8)(17,18)(19,23)(20,24)(21,30)(22,26)(25,31)(27,32)(28,29) involution — undirected(17,21)(18,25)(19,28)(20,27)(22,31)(23,24)(26,30)(29,32) involution — undirectedA 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.