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