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