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