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