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