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