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