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