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