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