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