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