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