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