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