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