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