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