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