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