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