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