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