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