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