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