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