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