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