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