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