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