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