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