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