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