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