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