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