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