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