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