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