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