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