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