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