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