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