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