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