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