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