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