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