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