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