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