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