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