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