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