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