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