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