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