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