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