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