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