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