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