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)(19,28)(20,25)(21,24)(22,26)(23,27)(29,30)(31,32)(33,34)(35,39)(36,43)(37,45)(38,41)(40,46)(42,44)(47,48) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,19,23,21)(18,24,27,28)(20,29,26,31)(22,30,25,32)(33,35,38,43)(34,39,41,36)(37,42,46,48)(40,47,45,44)(2,6)(7,13)(8,11)(14,16)(33,36,38,39)(34,35,41,43)(37,44,46,47)(40,42,45,48)(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,20,23,26)(18,25,27,22)(19,29,21,31)(24,32,28,30)(33,36)(34,35)(37,44)(38,39)(40,42)(41,43)(45,48)(46,47)(1,3)(2,7)(4,10)(5,9)(6,13)(8,14)(11,16)(12,15)(17,21,23,19)(18,24,27,28)(20,31,26,29)(22,30,25,32)(33,34)(35,36)(37,45)(38,41)(39,43)(40,46)(42,47)(44,48)(1,4,5,12)(2,8,6,11)(3,10,9,15)(7,14,13,16)(17,22,23,25)(18,26,27,20)(19,30,21,32)(24,31,28,29)(33,37)(34,40)(35,42)(36,44)(38,46)(39,47)(41,45)(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.