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