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