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