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