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