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