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