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