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