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