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