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