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