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