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)(17,18,21,26)(19,27,29,31)(20,24,22,25)(23,30,32,28)(1,3,6,13)(2,7,10,16)(4,14,5,12)(8,11,9,15)(17,19,21,29)(18,23,26,32)(20,30,22,28)(24,27,25,31)(1,3)(2,7)(4,12)(5,14)(6,13)(8,15)(9,11)(10,16)(17,18)(19,27)(20,24)(21,26)(22,25)(23,28)(29,31)(30,32) involution — undirected(1,4,6,5)(2,8,10,9)(3,12,13,14)(7,15,16,11)(17,20,21,22)(18,24,26,25)(19,28,29,30)(23,31,32,27)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.