One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,9)(6,10)(7,11)(8,12)(13,15)(14,16)(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)(1,3,6,4,8,14,7,13)(2,9,11,5,12,15,10,16)(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)(1,4,6,14,8,13,7,3)(2,5,11,15,12,16,10,9)(19,29)(24,37)(28,42)(30,44)(31,32)(38,47)(43,48)(45,46)(1,5)(2,3)(4,11)(6,15)(7,9)(8,16)(10,13)(12,14)(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(1,6,8,7)(2,10,12,11)(3,4,14,13)(5,9,16,15)(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.