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