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