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