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