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