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