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