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