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