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