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