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