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