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