One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,5,9,13)(4,8,11,14)(10,12,15,16)(17,18)(19,21)(20,22)(23,24)(25,31)(26,30)(27,28)(29,32)(33,34,40,39)(35,43,44,38)(36,41,47,46)(37,48,45,42)(4,11)(8,14)(10,15)(12,16)(17,19)(18,21)(20,27)(22,28)(23,26)(24,30)(25,29)(31,32)(33,35,40,44)(34,38,39,43)(36,42,47,48)(37,41,45,46)(2,7)(3,9)(8,14)(10,15)(18,24)(19,26)(20,25)(28,32)(33,36,40,47)(34,41,39,46)(35,42,44,48)(37,38,45,43)(1,3)(2,5)(4,10)(6,9)(7,13)(8,12)(11,15)(14,16)(17,20,23,25)(18,22,24,31)(19,27,26,29)(21,28,30,32)(33,37,40,45)(34,42,39,48)(35,41,44,46)(36,38,47,43)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,21)(18,19)(20,28)(22,27)(23,30)(24,26)(25,32)(29,31)(33,38)(34,35)(36,45)(37,47)(39,44)(40,43)(41,42)(46,48) involution — undirected(1,5)(2,3)(4,12)(6,13)(7,9)(8,10)(11,16)(14,15)(17,22)(18,25)(19,28)(20,24)(21,29)(23,31)(26,32)(27,30)(33,39,40,34)(35,43,44,38)(36,46,47,41)(37,48,45,42)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.