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