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